>I think the thing that aged the worst is Sam's lack of change over the course of the film.

It's a small-scoped movie that doesn't have enough spare time to tell more than one character's story. It has something to say about a character. I don't think it should be criticized for not having more to say about more characters.

Could it have been a better movie if it expanded the budget and extended the running time beyond 102 minutes to include more character development? Possibly. But Braff probably didn't have an extra million dollars laying around to make it happen. And I don't think he should be criticized for that.